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Old 02-07-2018, 09:39 AM   #21
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All hose clamps are stepless (lined) so the worm and slots don't come in contact with the hose. All hangers are lined or plastic. PVC electrical conduit hangers come in many sizes, are inexpensive, and work great for hose and electrical wiring.

Attachment 72743

Attachment 72744

Ted
As a side note... What a lovely fuel rig. Simple and neat.
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Old 02-07-2018, 09:41 AM   #22
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following
For the record: You can subscribe to a thread without having to post in the thread itself if you like. At the top of the page under 'Thread Tools' there is a drop-down menu where you can select 'Subscribe to this thread'

Just a quick FYI
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Old 02-07-2018, 09:51 AM   #23
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In Europe diesel fuel lines must be double clamped (AND OPPOSITE) on each side. Does this obligation not apply in the US?
Don't believe it applies in the USA. Certainly nothing wrong with it, but not really necessary on the vacuum side. Pressure side probably doesn't see 3 psi. Obviously everything that sees elevated fuel pressures on the engine is metal tubing.

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Old 02-07-2018, 10:04 AM   #24
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As a side note... What a lovely fuel rig. Simple and neat.
Thanks!

This is what the boat came with:

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Pretty easy to improve on this Rube Goldberg setup.

Ted
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Old 02-07-2018, 03:32 PM   #25
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Rubber hose tends to look crappy ( as does some wiring) because it sags between support points.

A piece of dowel next to the hose , and wire ties can make a big difference.
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Old 02-07-2018, 05:12 PM   #26
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I was referring to the pictures of OC Diver, where just are single clamps on all the fuel lines.
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Old 02-07-2018, 05:56 PM   #27
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2 are probably overkill.

A study or 2 showed very little benefit from a second clamp unless the first was crap or installed poorly.
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Old 02-08-2018, 10:09 AM   #28
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Why not use 316 stainless tubing and fittings?
We use it at work for all sorts of things.
You can get a 20' joint for about $35 and the fittings are about 10 each.
It is not hard to bend. I think it would be a lifetime fix and it would look good.
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Old 02-10-2018, 07:34 AM   #29
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Why not use 316 stainless tubing and fittings?
We use it at work for all sorts of things.
You can get a 20' joint for about $35 and the fittings are about 10 each.
It is not hard to bend. I think it would be a lifetime fix and it would look good.
Attachment 72784
Attachment 72785
Stainless is good for dairy products but a no-no in the engine room regarding fuel supply & transfer. Get ready for a severe scolding Latracha!
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Old 02-10-2018, 08:21 AM   #30
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Ive long been an Aeroquip fan. Easy to make up even in the worst condition. Of note, you must have Aeroquip assembly lube.
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Old 02-10-2018, 10:53 AM   #31
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Stainless is good for dairy products but a no-no in the engine room regarding fuel supply & transfer. Get ready for a severe scolding Latracha!
OK Boomerrang....I'll bite....What's wrong with SS piping for diesel???
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Old 02-10-2018, 11:10 AM   #32
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OK Boomerrang....I'll bite....What's wrong with SS piping for diesel???


Leaks.
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Old 02-10-2018, 11:34 AM   #33
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Leaks.
Expand, please....
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Old 02-10-2018, 12:09 PM   #34
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IT’S THE LAW - USCG:
183.538 Metallic fuel line materials.
Each metallic fuel line connecting the fuel tank with the fuel inlet connection on the
engine must:
(a) be made of seamless annealed copper, nickel copper, or copper nickel; and
(b) except for corrugated flexible fuel line, have a minimum wall thickness of 0.029
inches.
If metal is used for any portion of the fuel line (except for fittings) from the tank connection to
the engine connection (usually at the fuel pump), the metallic fuel line portions must be seamless,
annealed:
(1) Copper;
(2) Nickel copper (Monel); or
(3) Copper-nickel.
No other metals are permitted.
Also, the thickness of the tubing wall must be at least 0.029 inches unless the fuel line portion is
a corrugated or accordion type of flexible fuel line. Tubing is available with thinner wall
thicknesses, but they SHALL NOT be used.
Metal fuel lines used on the engine, i.e. the fuel line from the fuel pump to the carburetor, may be
made of materials other than those listed. This line is usually supplied with the engine.
TO COMPLY
Are metallic fuel lines made of seamless annealed:
Copper;
Nickel copper; or
Copper-nickel?
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Old 02-10-2018, 12:11 PM   #35
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I hate to be a typical copy & paste pundit. From the USCG compliance guidelines. I see it says except for the fittings and haven't delved to deep into the regulations. I might've seen stainless used on some applications but the majority of fittings & components seem to be brass ,aluminum & the like.
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Old 02-10-2018, 02:25 PM   #36
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Interesting read....

IIRC....regarding it being "Law"...183.538 does not apply to "uninspected", diesel powered recreational boats like ours.... However; the "recommendations" of ABYC H-33 certainly do apply, and it appears that SS is not specifically listed as one of the fuel piping materials.

I seem to remember reading somewhere that the standard was originally developed to address gasoline engines, and once it was adopted by USCG, it takes an act of congress to revise....

Coming from the code oriented Nuclear Power world, God knows I'd never suggest anyone here install something on their boat that wasn't kosher....However; there are lots of ways to skin a cat!

I wonder if those shiny pipes on our dual Racor filter switchover assemblies are made of SS?
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Old 02-10-2018, 04:39 PM   #37
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though I think there are SS fuel lines on mercruiser engines, but not positive.
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Old 02-10-2018, 05:14 PM   #38
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I believe they are worried about vibration cracks. Stainless steel is also excluded from fuel tanks on inspected vessels.

Ted
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Old 02-10-2018, 06:40 PM   #39
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Using copper reminds me of recent discussion between our marina mechanic and shipwright. Regarding an older Halvorsen, originally gas engined, with original copper fuel tanks,DD diesels fitted, shipwright said he`d been taught copper and diesel shouldn`t go together. Common practice suggests it`s not right, but I`ll raise anyway.
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Old 02-10-2018, 07:24 PM   #40
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Copper fuel lines were pretty much the standard for diesel for decades..

Had them in all 3 of my liveaboards.....my Cape Dory, Silverton and my Albin.

Decades old and still serviceable.
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